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CBD-VEGF improved blood vessel formation. (A) Immunohistochemical staining of CD31 for blood vessel density in the liver tissue. (B) Comparison of blood vessel density of each group. n=5 for each group. Data are presented as the mean ± standard deviation; **P<0.01, *P<0.05. CBD-VEGF, collagen-binding domain-vascular endothelial growth factor; NS, normal saline.
